Officials in China say the death toll from a massive flash flood that slammed into a primary school in a remote northeastern town has climbed to 103.

China's official news agency, Xinhua, says that of the dead, at least 99 were children.

At least six other people are still missing from the flash flood, which hit the northeastern town of Shalan in Heilongjiang province last Friday. Hundreds of children and more than 30 teachers were at the school when the flood hit the village.

Meanwhile, police are interrogating two local officials for possible negligence charges. Officials say villagers complained that the local government failed to organize a timely rescue operation.